Group I includes patients in anti-cancer therapy including chemo and radiotherapy, targeted treatment and radiotherapy but not hormone treatment, and without any sign of infection defined as temperature < 38 C and no focal symptoms of infections. Vital signs are noted and blood tests for haematology, CPR and PCT are drawn. Details about cancer type, stage, treatment history of infections less than 1 month prior and co-morbidity are registered. Data from this cohort will be used to assess median CRP and PCT among non-infected cancer patients. Forty patients will be included.